Mine bolt



FIG. 1 is a rear perspective view of a mine bolt, showing a first embodiment of my new design;

FIG. 2 is side elevational view thereof;

FIG. 3 is a front perspective view thereof;

FIG. 4 is an end view thereof;

FIG. 5 is another side elevational view thereof;

FIG. 6 is front view thereof;

FIG. 7 is a rear perspective view of a mine bolt showing a second embodiment of my new design;

FIG. 8 is a front perspective view of the second embodiment;

FIG. 9 is a side elevational view of the second ebodiment;

FIG. 10 is an end view of the second embodiment;

FIG. 11 is another side elevational view of the second embodiment; and,

FIG. 12 is a front view of the second embodiment.

The shank of the bolt is shown broken away to depict indeterminate length. 

The ornamental design for a mine bolt, as shown and described. 